US20200232958A1 - Packaging material comprising indicator responding to an external stimulus - Google Patents

Packaging material comprising indicator responding to an external stimulus Download PDF

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Publication number
US20200232958A1
US20200232958A1 US16/637,329 US201816637329A US2020232958A1 US 20200232958 A1 US20200232958 A1 US 20200232958A1 US 201816637329 A US201816637329 A US 201816637329A US 2020232958 A1 US2020232958 A1 US 2020232958A1
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United States
Prior art keywords
packaging material
layer
additive
package
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/637,329
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English (en)
Inventor
Paul Anthony Zerfas
Leonard SCAROLA
Stuart Mackintosh Blyth
Patrick Jules Joseph Poitevin
Jeffrey Thomas Weber
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mondelez UK R&D Ltd
Intercontinental Great Brands LLC
Original Assignee
Mondelez UK R&D Ltd
Intercontinental Great Brands LLC
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Filing date
Publication date
Application filed by Mondelez UK R&D Ltd, Intercontinental Great Brands LLC filed Critical Mondelez UK R&D Ltd
Priority to US16/637,329 priority Critical patent/US20200232958A1/en
Assigned to INTERCONTINENTAL GREAT BRANDS LLC reassignment INTERCONTINENTAL GREAT BRANDS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCAROLA, LEONARD, WEBER, JEFFREY THOMAS, ZERFAS, PAUL ANTHONY
Assigned to INTERCONTINENTAL GREAT BRANDS LLC reassignment INTERCONTINENTAL GREAT BRANDS LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MONDELEZ UK R&D LIMITED
Assigned to MONDELEZ UK R&D LIMITED reassignment MONDELEZ UK R&D LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLYTH, Stuart Mackintosh, POITEVIN, PATRICK JULES JOSEPH
Publication of US20200232958A1 publication Critical patent/US20200232958A1/en
Abandoned legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G01N31/229—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators for investigating time/temperature history
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/085—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/088—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B32B15/09—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/304—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl halide (co)polymers, e.g. PVC, PVDC, PVF, PVDF
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    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/306—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising vinyl acetate or vinyl alcohol (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
    • B32B27/308—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers comprising acrylic (co)polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
    • G01N31/22—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using chemical indicators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/02—Food
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/24—All layers being polymeric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2270/00—Resin or rubber layer containing a blend of at least two different polymers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/402—Coloured
    • B32B2307/404—Multi-coloured
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging

Definitions

  • the disclosure relates generally to marking a package or product with identifying indicium, and more particularly, to a method of marking a package using inkless printing to form identifying indicium on a desired surface.
  • Traceability refers to the possibility of being able to trace and control for example the origin of the packaging materials, product process parameters, parameters for packaging, and filling in a packaging line. This information may be used to generate a best-before-date for the package with content. Traceability throughout the value chain facilitates quick recall of packages and the possibility of ensuring a high quality of the final product and, in the end, such offers safety for the consumer and consumer trust for the food producer. Marking of packaging is a complex process that requires additional time and customization for each product produced.
  • a packaging material for use in a package having contents including a food item includes a layer including an additive transformable from a first state to a second state in response to an external stimulus and a barrier layer positionable between said layer and the contents of the package.
  • the barrier layer restricts diffusion of said additive to the contents.
  • said barrier layer is arrangeable in direct contact with the contents.
  • said layer does not directly contact the contents.
  • said barrier layer is positioned directly adjacent said layer.
  • the barrier layer comprises at least one of aluminum, aluminum oxide, silicon oxide, poly vinylidene chloride (PVdC), ethylene vinyl alcohol, polyamide, polyethylene terephthalate, polyethylene, polypropylene, ethylene vinyl acetate, poly ethylene methyl methacrylate, poly ethylene acrylic acid, poly ethylene methacrylate, polyvinyl alcohol, ionomer, acrylics, coatings containing layered silicates.
  • PVdC poly vinylidene chloride
  • said additive has a first color in said first state and a second color in said second state, said first color being distinguishable from said second color.
  • said additive is colorless.
  • said additive is configured to form identifying indicia in said second state.
  • said identifying indicia includes an image.
  • said identifying indicia has a multi-color configuration.
  • said external stimulus is selected from radiation, light, and heat.
  • said additive includes a diacetylene compound.
  • the package includes a first package and a second package, said layer being a portion of said first package and said barrier layer being a portion of said second package.
  • a multilayer packaging material for use in a food application includes a first layer, a second layer, and an intermediate layer positioned adjacent at least one of said first layer and said second layer.
  • the intermediate layer includes an additive transformable from a first state to a second state in response to an external stimulus.
  • At least one of said first layer, second layer, and intermediate layer is a polymeric layer.
  • said polymeric layer is selected from polyamide, polyethylene terephthalate, polyethylene, polypropylene, ethylene vinyl acetate, poly ethylene methyl methacrylate, poly ethylene acrylic acid, poly ethylene methacrylate, polyvinyl alcohol, ionomer or combinations thereof.
  • said intermediate layer is an adhering layer that adheres said first layer to said second layer.
  • said adhering layer includes a solventless laminating adhesive.
  • said adhering layer includes a solvent based laminating adhesive.
  • said adhering layer includes a water-based laminating adhesive.
  • said laminating adhesive layer comprises at least one of a polyether urethane adhesive, a polyester adhesive, a polyester urethane adhesive or an acrylic adhesive.
  • said intermediate layer includes a radiation curable adhesive.
  • said additive has a first color in said first state and a second color in said second state, said first color being distinguishable from said second color.
  • said additive is colorless.
  • said additive is configured to form identifying indicia in said second state.
  • said identifying indicia includes an image.
  • said identifying indicia has a multi-color configuration.
  • said external stimulus is selected from radiation, light, and heat.
  • said additive includes a diacetylene compound.
  • said additive is encapsulated within said intermediate layer.
  • a packaging material for use in a package having contents including a food item includes an additive associated with a layer of the packaging material.
  • the additive is transformable from a first state to a second state in response to an external stimulus.
  • the additive is associated with only a portion or portions of said layer of the packaging material.
  • the packaging material includes at least one polymeric layer.
  • said polymeric layer is selected from polyamide, polyethylene terephthalate, polyethylene, polypropylene, ethylene vinyl acetate, poly ethylene methyl methacrylate, poly ethylene acrylic acid, poly ethylene methacrylate, polyvinyl alcohol, ionomer or combinations thereof.
  • said portion or portions of the packaging material that contain said additive extend in a direction generally parallel to a machine direction.
  • said additive is arranged in a pattern over said portion or portions of the packaging material.
  • the packaging material is manufactured via a patterned extrusion and lamination process.
  • the packaging material is manufactured via a patterned coextrusion process.
  • the packaging material is manufactured via an extrusion coating process.
  • said additive has a first color in said first state and a second color in said second state, said first color being distinguishable from said second color.
  • said additive is colorless.
  • said additive is configured to form identifying indicia in said second state.
  • said identifying indicia includes an image.
  • said identifying indicia has a multi-color configuration.
  • said external stimulus is selected from radiation, light, and heat.
  • said additive includes a diacetylene compound.
  • a method of marking a package includes forming a packaging material including an additive transformable from a first state to a second state in response to an external stimulus into a package, sealing said package, and activating at least a portion of said additive to form identifying indicia on said package.
  • said activating at least a portion of said additive occurs on a packaging line during at least one of said forming and sealing.
  • the method of marking a package is a continuous process.
  • the method of marking a package is an intermittent process.
  • said activating said additive occurs on a packaging line with all of said forming, positioning, and sealing.
  • activating said additive to form identifying indicia includes applying at least one of radiation, light, and heat to said additive.
  • activating said additive to form identifying indicia includes moving a laser over a surface of said package including said additive.
  • said additive has a first color in said first state and a second color in said second state, said first color being distinguishable from said second color.
  • said additive is colorless.
  • said identifying indicia includes an image.
  • said identifying indicia has a multi-color configuration.
  • said additive includes a diacetylene compound.
  • a package includes a packaging material formed into a desired shape.
  • the packaging material including an additive transformable from a first state to a second state in response to an external stimulus.
  • At least one product is positioned relative to the packaging material such that a level of migration of said additive into said at least one product is maintained below a desired threshold.
  • said desired threshold is equal to or less than 10 ppb.
  • a paper material is positioned between said additive and said at least one product to maintain said level of migration into said at least one product below said desired level.
  • said paper material is disposed as a wrapper about said at least one product.
  • a clearance is arranged between said packaging material and said at least one product to maintain said level of migration into said at least one product below said desired level.
  • said additive is configured to form identifying indicia in said second state.
  • said identifying indicia includes an image.
  • said identifying indicia has a multi-color configuration.
  • said external stimulus is selected from radiation, light, and heat.
  • FIG. 1A is a top view of a color change composition according to an embodiment
  • FIG. 1B is a cross-sectional view of a color change composition according to an embodiment
  • FIG. 2 is a perspective view of a package according to an embodiment
  • FIG. 3 is a cross-sectional view of a packaging material according to an embodiment
  • FIG. 4 is a cross-sectional view of a package according to another embodiment
  • FIG. 5 is a cross-sectional view of a package according to an embodiment
  • FIGS. 6A and 6B are schematic diagrams of wet and dry adhesive lamination systems according to an embodiment
  • FIG. 7 is a schematic diagram of coextrusion die for manufacturing a multilayer packaging material according to an embodiment
  • FIG. 8A is a schematic diagram of extrusion coating system for manufacturing a multilayer packaging material according to an embodiment
  • FIG. 8B is a schematic diagram of extrusion lamination system for manufacturing a multilayer packaging material according to an embodiment
  • FIG. 9 is a top view of a layer of a packaging material including a color changing additive according to an embodiment
  • FIG. 10 is a cross-sectional view of a packaging material taken in a plane perpendicular to a machine direction according to an embodiment.
  • FIG. 11 is a schematic diagram of a packaging system for forming a package according to an embodiment.
  • a color changing composition 20 may be adapted for use in a variety of applications, including, but not limited to food or comestible applications, or packaging applications associated therewith.
  • An example of a color changing composition 20 is illustrated in FIGS. 1A and 1B .
  • the composition 20 typically includes a carrier material 22 and at least one component, such as an additive illustrated schematically at 24 , integrated into the carrier material 22 .
  • the carrier material 22 may be white, transparent, metalized, tinted, colored, window patched, mono, duplex, or triplex.
  • the additive 24 may be integrated into the carrier material 22 via any suitable process.
  • the additive may be encapsulated, embedded, coextruded, bi-injected, die-injected, blow molded, sandwich coated, or surface or reverse applied to the carrier material 22 .
  • the additive 24 in the form of pigment, molecules, or crystals is dispersed within the liquid.
  • liquid carrier materials include varnish, coating, and lacquer.
  • the additive may be integrated into conventional inks for printing, or may be used as a spot varnish that may be reactivated at a later stage.
  • the liquid carrier material 22 may be tinted, non-tinted, water based, solvent, ultraviolet, or any combination thereof.
  • the carrier material may be selected from a processed material, such as resin, polymer, monomer, adhesive or starch, and the additive 24 is embedded therein.
  • the additive 24 is illustrated as a plurality of particles, it should be understood that an additive in any suitable form is contemplated herein.
  • the color changing additive 24 includes a diacetylene compound.
  • diacetylene carboxylic acid compounds that can be used in the present invention include: 12,14-hexacosadiyndioic acid, 11,13-tetracosadiyndioic acid.
  • diacetylene compound is a dicarboxylic acid and derivatives thereof, it can be either symmetrical or unsymmetrical, either with respect to n and/or the alkyl chain length.
  • the additive 24 may include other color change chemistries that are directly responsive to light, in particular laser light. Examples of such chemistries include metal oxyanions, particularly molybdates and borates.
  • the additive may comprise charrable agents such as polysaccharides, carbohydrates, sugars and the like including: cellulose and derivatives thereof, glucose, saccharose, sucrose, maltodextrin, lactose, starch, dextrose and polydextrose and gums.
  • the additive may include metal salts such as sodium bicarbonate and sodium carbonate.
  • the additive may comprise a color forming agent such as leuco dyes and charge transfer agents. These can used in combination with a photo or thermal acid or base generating agents.
  • photoacid generating agents include “onium types” such as sulphonium or iodonium salts.
  • Further examples of photoacid generating agents include amine adducts of aromaticsulphonic acids such as amine adducts of di nonylnaphthalene disulphoic acid and tosylates.
  • Other acid generating ‘onium’ compounds include ammonium and amine: sulphate, phosphate, hydrogen phosphate, dihydrogen phosphate and borates.
  • any suitable additive is contemplated herein.
  • the additive 24 may be located generally adjacent a surface of the carrier material 22 , such as an exposed upper surface 26 of the carrier material 22 for example, as shown in FIG. 1B , or alternatively, may be distributed through the entire thickness of the carrier material 22 , such as in a homogeneous manner for example. Although only a single additive is illustrated in the FIGS., it should be understood that a plurality of different types of additives may be formed into a single color changing composition 20 . Further, in such embodiments, the colors associated with each of the plurality of additives may be the same or different in each of a first state and a second state.
  • the additive 24 is susceptible to transformation between a first state and a second state.
  • the additive 24 typically has a first color in the first state and a second color in the second state, the second color being distinct from the first color. Further, it should be understood that in either the first state or the second state, the additive 24 may be colorless, transparent, or the same color as the surrounding carrier material 22 . It should be understood that the color changing composition 20 may additionally include other components, such as pigments or colored materials for example, that remain in a constant state.
  • the color changing composition 20 may be used in processes such as inkless printing, which includes on-demand energized image generation without the application of added material.
  • the at least one additive 24 in the color changing composition 20 is configured to transform between the first state and the second state, i.e. change color, in response to the application of energy thereto, such as upon irradiation with light, including infrared light or light within either the visible or ultraviolet spectrum.
  • the additive 24 may be configured to change color when energized by, for example, other types of electromagnetic radiation, or an electron beam.
  • the one or more additives 24 are typically colorless or transparent prior to being energized and change color to one of a plurality of colors when energized depending on one or more parameters of the incident energy applied thereto and the carrier material. It should be understood that the color changing composition 20 illustrated and described herein is intended as an example only, and any type of color changing composition transformable between a first state and a second state is considered within the scope of the disclosure.
  • a package 30 configured to enclose one or more food items, such as a comestible or confectionery for example.
  • the package 30 is used to contain and/or dispense one or more product pieces, such as pieces of confection contained in loose orientation within the package 30 .
  • the pieces of confection illustrated in broken lines at 38 , may be any size, shape, or configuration. While described with reference to a plurality of pieces of confection, it is contemplated that the package 30 may contain one or more products having portions thereof that can be broken away or detached for use.
  • the package 30 includes a generally elongate tubular body 32 which may be formed from a thin-film flexible material, such as polypropylene for example. However, a rigid material is also within the scope of the disclosure.
  • the package 30 includes opposed ends 34 and 36 which are sealed closed.
  • Various conventional techniques are known for sealably closing the ends 34 and 36 of package 30 . These techniques may include crimp-sealing the ends, as well as heat-sealing the ends. The seals are such that they hermetically seal the package, thereby protecting the pieces of confection 38 contained therein during shipping and prior to use.
  • one of the ends 34 , 36 may be detached from the body 32 to form an open end.
  • the package 30 illustrated and described herein is intended as an example only, and any type of package having any shape and formed from any material operable to substantially enclose one or more food items is contemplated herein.
  • the package 30 includes a color changing composition 20 visible at an exterior of the package 30 .
  • All or a portion of the color changing composition 20 may be transformed between the first and second state to provide information, such as regarding the package 30 or the contents thereof for example.
  • the color changing composition 20 may be transformed between the first state and second state at any of a variety of locations or stages during a packaging or dispensing process.
  • all or a portion of the color changing composition 20 may be transformed from a first state to a second state during the packaging of one or more items.
  • Embodiments where various portions of the color changing composition 20 are changed at different stages within the same process, or within different processes are also within the scope of the disclosure.
  • a first portion of the color changing composition 20 is transformed prior to the packaging process to generate first piece of information, such as generic information associated with the manufacturer or the production process, and a second portion of the color changing composition 20 is transformed within the within the packaging process to provide a second piece of information, such as to indicate specific information, such as the date of manufacture.
  • the information may be generated, via application of energy to the color changing composition 20 , to form any identifying feature such as letters, numbers, characters or symbols, or an image and markings for example. It should be understood that the application of heat and/or energy may be controlled and/or manipulated to generate the desired indicia.
  • the additive 24 may be embedded within the packaging 30 in a desired shape representative of one or more pieces of information.
  • the indicium is generated simply upon the application of heat and/or energy over the entire area of the composition 20 including the additive 24 .
  • the information generated may comprise a single color, or alternatively, may comprise a plurality of colors distinguishable from the adjacent surface of the package 30 .
  • the color changing composition 20 may be a separate component, such as a film or tape for example, applied over an exterior surface of the package 30 .
  • the color changing composition 20 may be integrated into the material of the package 30 .
  • FIG. 3 illustrates a cross-sectional view of a portion of the material 40 of the package 30 .
  • the material of the package 30 illustrated schematically at 40 , includes a plurality of layers arranged in an overlapping configuration.
  • the plurality of layers of the packing material 40 includes a first layer 42 , for example located generally adjacent an exterior of the package 30 , a second layer 44 located adjacent the first layer 42 , such as generally adjacent an interior of the package 30 , and an intermediate layer 46 interposed between the first and second layers 42 , 44 .
  • the intermediate layer 46 includes an adhesive material.
  • the first and second layers 42 , 44 may be polymeric layers formed from the same material or from different materials, and the intermediate adhesive layer 46 may include a laminating adhesive, such as a solvent-less, a solvent based, or a water-based laminating adhesive for example.
  • a laminating adhesive such as a solvent-less, a solvent based, or a water-based laminating adhesive for example.
  • suitable laminating adhesives include but are not limited to a polyether urethane adhesive, a polyester adhesive, a polyester urethane adhesive, and an acrylic adhesive.
  • the intermediate layer 46 may also be formed from a polymeric material.
  • adhesive layer 46 may be configured as a color changing composition 20 , such as by using the adhesive layer 46 as the carrier material 22 and incorporating an additive 24 configured to transform between a first and second state into the adhesive layer 46 for example.
  • the adhesive layer 46 may cause all or a portion of the additive 24 to transform between a first state and a second state.
  • the color changing composition 20 is described as being integrated into the adhesive layer 46 , it should be understood that the color changing composition 20 may be formed in any of the plurality of layers of the material 40 .
  • the additive 24 is integrated into one of the layers 42 , 44 , 46 of the packaging material 40 such that the level of migration of the additive 24 towards and into contact with the product 38 within the package 30 is less than a desired threshold, such as less than or equal to 10 ppb.
  • the level of migration is achieved by maintaining a distance or clearance 47 between the product 38 and the adjacent packaging material including the additive 24 .
  • the particles of additive 24 cannot diffuse through the air within the gap to contact the products 38 .
  • a layer of material may be disposed between the additive particles 24 and the products 38 .
  • the layer of material may be any suitable material capable of limiting migration of the particles to below the desired threshold. However, the layer of material need not restrict all migration of the additive 24 .
  • the layer of material includes a paper or plastic that forms a wrapper about the product 38 . Alternatively, or in addition, the paper may be integrated into the packaging material 40 at a position between the additive 24 and the product 38 .
  • At least one barrier layer is positioned between the color changing composition 20 and the one or more food items contained within the package 30 .
  • the second layer 44 may be configured as the barrier layer.
  • any layer within the material 40 regardless of whether that layer is directly adjacent the color changing composition 20 may be configured as the barrier layer.
  • the color changing additive 24 may be embedded directly within the barrier layer, for example by blending the additive 24 with the barrier material and then subsequently creating a layer from the blend.
  • the additive 24 may be formed in only a portion of a thickness of the carrier material 22 , such that the portion of the barrier material between the additive 24 and the product functions as the barrier layer.
  • the barrier layer may be a separate component, such as a film or tape for example, applied over an interior surface of the package 30 .
  • the at least one barrier layer is intended to hinder i.e. completely restrict diffusion of any of the normally mobile chemicals in the additives 24 of the color changing composition 20 .
  • a barrier layer between the layer including the additive 24 and the product within the package 30 the internal surface of the package 30 is allowed to directly contact the consumable item contained therein, thereby allowing increased flexibility in the overall shape and materials used to form the package 30 .
  • suitable materials for use in the barrier layer include, but are not limited to, aluminum, aluminum oxide, silicon oxide, polyvinylidene chloride (PVdC), ethylene vinyl alcohol, polyamide, polyethylene terephthalate, polyethylene, polypropylene, ethylene vinyl acetate, poly ethylene methyl methacrylate, poly ethylene acrylic acid, poly ethylene methacrylate, polyvinyl alcohol, ionomer, acrylics, coatings containing layered silicates.
  • PVdC polyvinylidene chloride
  • a plurality of packages 30 containing one or more food items may be arranged, such as within a hollow interior of a secondary, outer package 48 .
  • the outer package 48 is configured to retain the plurality of inner packages 30 together during the sale thereof.
  • At least a portion of the outer package 48 includes a color changing composition 20 visible at an exterior of the outer package 48 .
  • a portion of the color changing material 20 may be transformed between the first and second state to provide information regarding the package 48 and/or the contents thereof.
  • the information may be generated, via application of heat or energy to the color changing composition 20 , to form any identifying feature such as letters, numbers, characters or symbols, or an image for example, and may include one or more distinct colors.
  • the inner packages 30 may, but need not, include a color changing composition 20 formed therein.
  • the packaging material 40 of the inner packages 30 disposed between the additive 24 of the color changing composition 20 of the outer package 48 and the products contained within the inner packages 30 , functions as the barrier layer to protect the products from contamination.
  • the color changing composition 20 may be integrated into a packaging material 40 .
  • the packaging material 40 has a multilayer construction
  • the plurality of layers may be formed separately or in unison via any suitable process. Examples of suitable manufacturing processes including, but are not limited to, adhesive lamination, extrusion coating, or extrusion lamination for example.
  • FIGS. 6A and 6B examples of systems for forming a packaging material 40 via adhesive lamination is shown.
  • the packaging material 40 includes a first layer 52 and a second layer 54 .
  • a packaging material 40 having any number of layers is within the scope of the disclosure.
  • one of the layers 52 , 54 of the packaging material 40 includes the color changing additive 24 .
  • the first layer 52 and the second layer 54 are formed individually, such as via an extrusion process for example.
  • the formed layers 52 , 54 are then laminated to one another to form the packaging material 40 .
  • This lamination may occur via either a “Wet” adhesive lamination process ( FIG. 6A ) or a “Dry” adhesive lamination process ( FIG. 6B ).
  • an adhesive material or coating 56 is applied to one of the layers of material prior to being combined with another layer or material.
  • the adhesive may be wet or dry when the adjacent layers are combined.
  • a coextrusion system 60 may include a plurality of distinct extruders, such as a first extruder 62 a for extruding the first layer 52 , a second extruder 62 b for extruding the second layer 54 , and a third extruder 62 c for extruding a third layer 56 .
  • a die of each extruder 62 a - 62 c forms an extrudate 64 a - 64 c having a desired shape.
  • the relative configuration of the dies causes the extrudate to adjoin one another in a desired manner.
  • the layers of the packaging material 40 are expelled from the system 60 in unison and as a single body 66 .
  • the extrudate 66 such as a color changing composition 20 , output from an extruder, or alternatively from a coextrusion system 60 , may be adhered to a single layer of substrate or film 68 .
  • An adhesive such as in the form of a coating or another layer for example, is applied to the substrate 68 to couple the extrudate 66 to the substrate 68 .
  • the extrudate 66 and the film 68 may be supplied to a gap, such as formed between a pair of rollers 67 , 69 , where they are laminated causing the extrudate 66 to adhere to the substrate 68 .
  • a secondary substrate of film 68 having an adhesive material disposed thereon is also applied to the opposite side of the extrudate 66 .
  • each of the substrates 68 a , 68 b , and the extrudate 66 is supplied to the gap between the rollers 67 , 69 .
  • the rollers 67 , 69 move the substrates 68 a , 68 b into contact with the major surfaces of the extrudate 66 to form a multilayered material.
  • one of the plurality of layers has the at least one additive 24 included therein.
  • the layer containing the additive 24 may be a polymeric layer.
  • materials suitable for the polymeric layer include, but are not limited to polyamide, polyethylene terephthalate, polyethylene, polypropylene, ethylene vinyl acetate, poly ethylene methyl methacrylate, poly ethylene acrylic acid, poly ethylene methacrylate, polyvinyl alcohol, ionomer or combinations thereof.
  • the positioning of the additive 24 within a layer may be controlled.
  • the layer 54 may be extruded from an extruder die having a desired width W; however, a width Wa of the additive 24 may be equal to only a portion of the width of the layer 54 .
  • the additive 24 may be arranged within the layer 54 to form a band or strip extending parallel to the machine direction, i.e. the direction of movement of the layer through the extruder die.
  • the additive 24 may be arranged in a pattern across one or more portions of the layer 54 .
  • any suitable configuration where the positioning of the additive 24 is controlled i.e. the additive does not extend through the entirety of a corresponding layer or carrier material is contemplated herein.
  • the packaging material 40 including a color changing composition 20 is used to form a package, such as package 30 or package 48 for example
  • the material 40 is typically provided to a packaging system with at least a portion of the color changing composition being in a first state.
  • the additive 24 is typically colorless, transparent, or may be the same color as the adjacent material.
  • the additive 24 within the packaging material 40 in the first state does not provide any markings or identifying indicia.
  • An example of a packaging line or system 70 is illustrated in FIG. 11 .
  • the packaging system 70 typically includes a first system 72 configured to receive a piece of packaging material 40 for forming into a desired shape.
  • the desired shape is typically the form of a package or container, illustrated at 74 , such as having a generally hollow interior for example, within which one or more items may be located.
  • a second system 76 Downstream from the first system 72 is a second system 76 configured to position one or more food items, illustrated schematically at 78 , within the hollow interior of the package 74 .
  • the package 74 is provided to a third system 80 where the package 74 is sealed to retain the items therein.
  • the first, second and third systems 72 , 76 , 80 are arranged to form a continuous packaging line 70 .
  • the first, second, and third systems 72 , 76 , 80 are illustrated and described herein as distinct systems, embodiments where two or more of the systems are integrated are also contemplated herein.
  • the packaging system 70 includes one of a vertical form-fill seal machine, a horizontal form-fill-seal machine, or a thermoform fill-seal-machine.
  • the at least one additive 24 is transformed from the first state to the second state within the packaging system 70 to form indicia or other identifying marks or images on the package 74 .
  • the indicia are formed by applying radiation or a heat pattern, such as generated by a laser for example.
  • the laser may have a digital interface including a module containing information associated with the indicia to be formed.
  • energy is applied to the additive 24 within the packaging material 40 being formed into a package 74 having a desired shape.
  • the forming of the indicia may occur either prior to or after the package 74 is filled with one or more items 78 .
  • the indicia may be formed after the package 74 is sealed to contain the items 78 therein.
  • a package including a color changing composition 20 as illustrated and described herein has the added benefits of providing flexibility in when and how the package is marked with identifying indicia. Accordingly, a generic film or other color changing composition may be adapted for use with multiple types of products, and product specific information may be generated via a machine. Through such a process, product specific information, and even information specific to each individual unit produced may be added to a package.
  • the use of a generic film simplifies inventory by eliminating product specific packaging films, and further increases efficiency by eliminating downtime for changeover of the system between products. As a result, the total amount of waste associated with a packaging and marking process is reduced.

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  • Packages (AREA)
  • Laminated Bodies (AREA)
US16/637,329 2017-08-14 2018-08-13 Packaging material comprising indicator responding to an external stimulus Abandoned US20200232958A1 (en)

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US201762545191P 2017-08-14 2017-08-14
US16/637,329 US20200232958A1 (en) 2017-08-14 2018-08-13 Packaging material comprising indicator responding to an external stimulus
PCT/US2018/046454 WO2019036342A2 (en) 2017-08-14 2018-08-13 INK-FREE PRINTING ON SUBSTRATES AND EDIBLE PRODUCTS

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WO2019036342A2 (en) 2019-02-21
AU2018318927A1 (en) 2020-02-06
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CA3128611A1 (en) 2019-02-21
MX2020001388A (es) 2020-03-20
JP2020528387A (ja) 2020-09-24
JP2022093734A (ja) 2022-06-23
AU2021258050A1 (en) 2021-11-25
CN114536885A (zh) 2022-05-27
CA3070454A1 (en) 2019-02-21
EP3669187A2 (en) 2020-06-24
CN110945351A (zh) 2020-03-31

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